640 engine turns over by hand while in gear

Curious640 · Jul 7, 2016

I replaced the flywheel ring gear. When I slid the engine and transmission back together, I am still able to turn the crank with a wrench with the shifter in gear. I have not refilled the hydraulic oil yet and Im wondering if that has something to do with it.

Looking for ideas. I don't know a great deal about tractors

stevob671 · Jul 7, 2016

If in gear you may be able to turn it over by hand with a wrench and it should move...if it don't move, something didn't get hooked up right.

old · Jul 7, 2016

Depends on how far you turned the crank. Not all that long ago I was replacing the hyd pump drive on my 841 and figured I would put it in gear so I could loosen the bolts in the drive hub but doing so did not hold it in place and I must have gotten at least one full turn of the crank and could have kept turning it more so I just stopped at that point and did it another way

Curious640 · Jul 8, 2016

thank you for the replies. I can't think of any reason why it still turns either except that I put something together wrong. Just trying to make sure before I pull it back apart.

Hobo,NC · Jul 8, 2016

The best place to check it is at the PTO shaft were it sticks out the rear of the tractor.

Hobo,NC · Jul 8, 2016

If it has a ORC remember it will slip in one direction but not the other direction.. :wink: You do not have the mechanical advantage at the PTO like you have at the crank with a leaver like a wrench...

I understand were you are at it takes a good feel to tell if the clutch releases at the crank with a leaver line a wrench are a pull bar...

Move to the rear of the tractor I think you will find what you are looking for. The output side is always the best side to check :!: Car truck tractor are what ever...

Curious640 · Jul 9, 2016

Thanks for the idea. Ill check it out

Curious640 · Jul 10, 2016

ok i engaged the pto and could not turn it one way by hand. is the pto not tied in with the tractor wheel gears? is it a direct connection to the transmission and engine?

Machnegative · Jul 10, 2016

(quoted from post at 09:59:09 07/10/16)
ok i engaged the pto and could not turn it one way by hand. is the pto not tied in with the tractor wheel gears? is it a direct connection to the transmission and engine?

If the PTO is engaged, transmission in neutral, and clutch "out", it is a direct connection to the engine.

Curious640 · Jul 10, 2016

Ok with trans in neutral and pto engaged, i cannot turn the pto shaft in one direction.

Curious640 · Aug 8, 2016

ok it seems I was paranoid. The engine will turn over a bit before it engages the transmission. I kept turning engine and it finally engaged the wheels. Tractor is back together now and running fine. Thanks for the comments and ideas.

640 engine turns over by hand while in gear

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